Is real GDP stationary? Evidence from a panel unit root test with cross-sectional dependence and historical data

We use historical data that cover more than one century on real GDP for industrial countries and employ the Pesaran panel unit root test that allows for cross-sectional dependence to test for a unit root on real GDP. We find strong evidence against the unit root null. Our results are robust to the chosen group of countries and the sample period. Key words: real GDP stationarity, cross-sectional dependence, CIPS test. JEL Classification: C23, E32

HPSS Consultant and Distinction Awards Scheme (DMSAC)

HPSS Consultant and Distinction Awards Scheme (DMSAC)

New HPSS Clinical Excellence Awards Scheme (PDF 42 KB)

New HPSS Clinical Excellence Awards Scheme

Literature Review: Equality of Opportunity in Relation to the DHSSPS Draft Equality Scheme

This review of the literature on equality of opportunity issues was commissioned by the Department of Public Health, Social Sevices and Public Safety.

Adaptive filtering methods for identifying cross-frequency couplings in human EEG.

Oscillations have been increasingly recognized as a core property of neural responses that contribute to spontaneous, induced, and evoked activities within and between individual neurons and neural ensembles. They are considered as a prominent mechanism for information processing within and communication between brain areas. More recently, it has been proposed that interactions between periodic components at different frequencies, known as cross-frequency couplings, may support the integration of neuronal oscillations at different temporal and spatial scales. The present study details methods based on an adaptive frequency tracking approach that improve the quantification and statistical analysis of oscillatory components and cross-frequency couplings. This approach allows for time-varying instantaneous frequency, which is particularly important when measuring phase interactions between components. We compared this adaptive approach to traditional band-pass filters in their measurement of phase-amplitude and phase-phase cross-frequency couplings. Evaluations were performed with synthetic signals and EEG data recorded from healthy humans performing an illusory contour discrimination task. First, the synthetic signals in conjunction with Monte Carlo simulations highlighted two desirable features of the proposed algorithm vs. classical filter-bank approaches: resilience to broad-band noise and oscillatory interference. Second, the analyses with real EEG signals revealed statistically more robust effects (i.e. improved sensitivity) when using an adaptive frequency tracking framework, particularly when identifying phase-amplitude couplings. This was further confirmed after generating surrogate signals from the real EEG data. Adaptive frequency tracking appears to improve the measurements of cross-frequency couplings through precise extraction of neuronal oscillations.

Performance-Related Awards: Health Boards Scheme

Performance-Related Awards: Health Boards Scheme This progress report to September 2003 on the performance-related awards scheme for senior health board management has been prepared by the Committee for Performance Awards for the Health Board Scheme, in line with the recommendation in Report No. 38 of the Review Body for Higher Remuneration in the Public Sector, to contribute to the Review Bodyâ?Ts consideration at its next general review (para 13.4). Click here to download PDF 93kb

Review of the Nursing Home Subvention Scheme

Review of the Nursing Home Subvention Scheme The government decided in 1997 to approve proposals from the Minister for Finance for a process of expenditure reviews as a key part of the financial management systems that are central to the Strategic Management Initiative and are intended to ensure greater predictability in resource planning. The aims of the expenditure review process are as follows: Click here to download PDF 873kb

Review of the Nursing Home Subvention Scheme

Click here to download PDF

Performance-Related Awards: Health Boards Scheme

Click here to download PDF

Report of the Maternity and Infant Care Scheme Review Group

The Irish service was last reviewed in 1980.  Much of the valuable recommendations made at that time have been given effect.  The present Review Group examined that report and, to the extend that recommendations then made have not been acted upon, incorporated them in this report. The views and rights of mothers were of course paramount in the consideration of the members of the Group and issues of choice, privacy, consent and information were considered and appropriate recommendations made. Download the Report here